After being cured and woken, the Mikaelson siblings join Hayley in an effort to rescue Klaus from captivity – even if they must face Marcel in the process. Meanwhile, Klaus’ demons materialize in unexpected ways as he suffers from the effects of the Tunde Blade, and Vincent investigates a haunting that will prove to be much more sinister than he could have imagined.

After being summoned by the ancestors, Hayley and Klaus travel to the ancestral world and come face to face with Davina, Klaus' former foe and the one person who holds the secrets to The Hollow's demise. Meanwhile, old wounds are re-opened when Elijah and Marcel are forced into an uneasy alliance. Together, they meet with Alaric who has tracked down a crucial artifact that could help in their fight against The Hollow.